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Hematite
Hematite

Atacamite
Atacamite



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Hematite and Atacamite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine, Vitreous
1.2 Pleochroism
O = brownish red; E = yellowish red
X = pale green; Y = yellow-green; Z = grass-green
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Not Available
1.5 Refractive Index
2.690-3.220
1.831
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.280
0.049
1.9 Clarity
OpaqueHerve Nicolas Lazzarelli
Not Available

Hematite and Atacamite Optic Character

Hematite and Atacamite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hematite and Atacamite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Hematite and Atacamite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Hematite and Atacamite Transparency

Similar to their colors, Hematite and Atacamite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli while Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli in appearance.

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